There are three requirements must be met in order to use these switchback LED bulbs properly:

1) The switchback LED bulbs are installed for the front turn signal lights 2) The front turn signal lights are double-filament which means the bulbs
function as both turn signal lights and parking lights (or even turn signal lights, parking lights and daytime running lights).
3) The turn signal lamp lenses are clear

For the 2nd requirement, you can simply count how many wires are there for your turn signal light bulb. If there are three wires, most likely the bulb is
a double-filament bulb.

Q: Do I need load resistors for these switchback LED bulbs?

A: Yes, the switchback LED bulb needs 50W 6-Ohm load resistor to ensure its proper dual-color alternating function. You must tap this 50W 6-Ohm resistor (not the 25W resistor) between the ground wire and the turn signal light positive to ensure the switchback LED bulb flashes properly, meaning when headlight is off, the switchback LED bulb flash amber-off-amber-off.
When the headlight is on, the switchback LED bulb lights up and stays xenon white. When the turn signal is on, the LED bulb blinks amber-off-amber-off and returns back to white when
the turn signal is off.

Without resistors or wrong wire tapping will potentially affect the proper function of the switchback LED bulb. We are going to illustrate this issue with this video below:

Q: Will these switchback LED bulbs work on my single filament bulbs?

A: No, this switchback LED bulbs will only work with dual filament housings such as 1157, 3157, and 7443. However, we do carry a special single filament switchback LED available which will work for 7440 single filament housings.

Q: Are these Type 1 or Type 2 switchback LED bulbs?

A: Our switchback LED bulbs are Type 2 switchbacks. During daytime, when the headlight or parking light is off, this switchback LED bulb will blink Amber-off-Amber-off when the turn signals are engaged and return OFF afterwards. During night time when the headlight or parking light is on, this switchback LED bulb will blink Amber-off-Amber-off when the turn signals are engaged and return back to Xenon White afterwards. We have this video demonstrating this, please take a look.

Q: Can I install these switchback LED bulbs for European cars?

A: We do not recommend you install these switchback LED bulbs for an European car as turn signals. It is very complicated to wire up the load resistors for many European cars, otherwise you will experience not only hyper flash issue but also "bulb out" warning on dashboard. Because of these
issues, we do not recommend this.

Q: How do I install these switchback LED bulbs?

A: We have this general switchback LED bulbs installation based on a Scion FR-S. Please keep in mind that due to the different housing styles of vehicles, there may be more steps involved in replacing your specific light and we do not have an installation guide for each and every vehicle out on the road. For guides that are not available for your vehicle, choose a guide that closely resembles your vehicle and apply the same concept.

Q: How come during daytime, when the headlight is off, the switchback LED bulbs only light up amber not white?

A: This is normal. Since the white portion of the switchback LED bulb lights up as parking light, it means only when the headlight is on, will it
light up white.

Q: How come during daytime, when the headlight is off, the switchback LED bulbs light up amber and blink amber?

Q: After I installed these switchback LED bulbs, when the car is off, both white and amber work. However after I start the car and turn on the
headlights, the white portion no longer lights up anymore, why?

A: This is a very rare and isolated situation. So far, we've found this issue happened on several American cars. If this is unfortunately
happening to your car, it means our switchback LED bulbs are not compatible with your car's electrical system. In this case, you can can always return them.

Additional Information

Our iJDMTOY 27-SMD 1157, 3157 or 7443 Bi-Color LED Switchback Bulbs are the new and updated version of our previous 54-SMD Bi-Color LED Switchback Bulbs; these bulbs feature a brand new SMD LED diode that produces both the Xenon White and Amber LED colors in one. The new technology allows these bulbs to be the about twice as bright as any similar style bulbs on the market.

Switchback LED bulbs are lit as Xenon White during the Parking/City Light Mode and blink Amber when the turn signals or emergency flasher lights are engaged.

This Known Compatible Vehicle List includes all of the currently known vehicles that use this product, but there may be more vehicles not on the list that can also use
this product as well.

The bulbs are cool as h*ll !On my 2013 soul, front turn\marker lights,the amber is good. When they are on aswhite marker lights, they are twice as bright!They may cost a little more, but if they lastgood deal. Good enough, i'm ordering a pair of 3157 for my truck driver buddy for Xmas!

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Good Lights

October 14, 2013

Reviewer:
David R. from Dayton, TX United States

I really like these light in my 2012 f150. The only issue i have is the white does not match the 6k hids, ccfl halos, or the other leds that i have in my headlights and foglights. The amber is great and a solid color but the white has a more yellow tint to it than I would like. I have had them for a while with zero issues, all the leds still work. But I will be switching them out for a different style shortly.

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Super bright

March 5, 2013

Reviewer:
alex from BRUNSWICK, OH United States

I bought this new switchback LED bulbs for my 2013 Scion FR-S for the front turn signal lights.

Surprisingly this two-color 7443 LED bulb is much brighter than the ones I previously bought off ebay and not only this, the Amber color is actually amber instead of a weird looking yellowish.

The installation is very easy, directly plug and play and tap the resistors and that's it. Now my FRS looks so sexy!

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'12 F250 Switchback - 3157, AWESOME

January 20, 2013

Reviewer:
Hunter from Norfolk, VA United States

I installed these on my '12 F250. At first when I plugged them in before attaching the load resistors, they gave me only amber and no white light...didn't know why. Then I hooked up the Load resistors, they wired differently then in the photo on the website. They attached to the two outside wires, instead of the outside negative and middle wire. So i just had to correct that minor detail. They look SICK on my truck. They don't 100% match my 6K xenon lights, but they're about 95% match in color. My lights are a tad bit blue'er then the LEDs. But from a distance they look spot on. This is an awesome little tweek to my tuck, I LOVE It. wish i could post a photo

I have had these switch back bulbs for about 4 weeks now. I am more than happy with the product. The clarity and brightness is more than what I expected. I would suggest changing your headlight bulbs if you are changing your turn signal bulbs like I did

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